<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Document</title>
  <style>
      .container{
        width:800px;
        height:800px;
        background-color:red;
        position: relative;
      }
      .box{
        width:500px;
        height:500px;
        background-color:#0f0;
        position: absolute;
        right:0px;
        bottom:0px;
      }
      img{
        width:100px;
      }
      strong{
        position:absolute;
        left:0px;
        bottom:0px;
        width:150px;
        height:100px;
      }
      </style>
</head>
<body>
    <div class="container">


        <div class="box">
          <sapn>我是span元素</sapn>
          <strong>我是strong元素</strong>
          <img src="../images/muxing.jpg" alt="">
          <div>我是div元素</div>
        </div>
       </div>
</body>
</html>